Carbon steel is the earliest and most widely used basic material in modern industry.In the industrial countries of the world, while striving to increase the output of low-alloy and high-strength steel and alloy steel, great attention is paid to improving the quality of carbon steel and expanding the variety and range of application.

At present, the output of carbon steel accounts for about 80% of the total output of all countries. It is widely used not only in construction, bridge, railway, vehicle, ship and various machinery manufacturing industries, but also in modern petrochemical industry and Marine development.